Emerald and diamond cluster ring. Set with an octagonal emerald-cut natural Colombian emerald with no colour enhancement in an open back rubover setting with an approximate weight of 0.60 carats, further set with twenty seven round old cut diamonds in open back rubover and grain settings with a combined weight of 0.70 carats and two rectangular baguette cut diamonds in open back rubover settings with a combined weight of 0.10 carats and five round eight cut diamonds in open back grain settings with a combined weight of 0.10 carats. The total approximate diamond weight is 0.90 carats, to a fancy openwork cluster design with millegrain borders, a pierced gallery, fancy shaped backholing and a slim D-shape shank. Marked platinum, maker's mark for M. Waslikoff & Sons, American, circa 1930.
